| 嘉陵江瓦氏黄颡鱼星耳石重量与年龄的关系 |
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| 引用本文： | 李育培,刁晓明,盛晓洒,权恒.嘉陵江瓦氏黄颡鱼星耳石重量与年龄的关系[J].淡水渔业,2009,39(2). |
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| 作者姓名： | 李育培 刁晓明 盛晓洒 权恒 |
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| 作者单位： | 西南大学动物科技学院水产科学系,淡水生物生殖与发育教育部重点实验室,重庆,400716 |
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| 基金项目： | 重庆市科学技术委员会资助项目 |
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| 摘 要： | 在重庆市北碚区嘉陵江白庙子江段采集瓦氏黄颡鱼(Pelteobagrus vachelli(Richardson))标本586尾,对其星耳石重量与年龄之间的关系进行了研究。结果显示:瓦氏黄颡鱼星耳石重量在不同年龄组间的重叠相对较少,大小相近的个体,年龄大的(即生长慢的)星耳石重量比年龄小的(即生长快的)大,不同年龄组之间星耳石重量差异显著(P<0.05)。按年龄组以星耳石重量与相应的体长作图,可初步判断所观测年龄的可靠性。分析星耳石重量的频率分布,能分离出体长相近但年龄不同的个体,其结果与依据星耳石年轮观测的基本一致,星耳石重量与年龄呈显著线性相关(P<0.05);用该相关性估算年龄,与从星耳石上直接读取的年龄并无显著差异(P>0.05),它们之间的吻合度高达96.2%。因此,星耳石重量具有直接确定嘉陵江瓦氏黄颡鱼年龄的潜能或作为验证依据钙化组织判断年龄准确性的辅助手段。
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| 关 键 词： | 瓦氏黄颡鱼(Pelteobagrus vachelli(Richardson)) 星耳石重量 年龄鉴定 |
The relationship between asteriscus otolith weight-age in Pelteobagrus vachelli(Richardson) from the Jialingjiang River |
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| LI Yu-pei,DIAO Xiao-ming,SHENG Xiao-sa,QUAN Heng.The relationship between asteriscus otolith weight-age in Pelteobagrus vachelli(Richardson) from the Jialingjiang River[J].Freshwater Fisheries,2009,39(2). |
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| Authors: | LI Yu-pei DIAO Xiao-ming SHENG Xiao-sa QUAN Heng |
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| Institution: | LI Yu-pei,DIAO Xiao-ming,SHENG Xiao-sa,QUAN Heng(Key Laboratory of Freshwater Biology Reproductive and Developmental,Ministry of Education,Department of Fisheries Science,College of Animal Science and Technology,Southwest University,Chongqing 400716) |
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| Abstract: | From January to December,2007,a total of 586 Pelteobagrus vachelli(Richardson)were collected from Jialingjiang River,Beipei,Chongqing.The relationship between otolith-weight and age in P.vachelli and the use of otolith-weight for validating annulus counts on otolith were investigated.The results indicated that asteriscus otolith weight had little overlaps among different age classes,and for individuals with similar body length,the older(slower-growing) was heavier in asteriscus otolith than the younger(fast... |
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| Keywords: | Pelteobagrus vachelli(Richardson) asteriscus otolith weight age determination |
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